BrewDog said Sink the Bismarck would be sold online A controversial Scottish brewery has said it has reclaimed the title of the world's strongest beer from German rivals - with Sink the Bismarck at 41%.BrewDog, of Fraserburgh, made headlines last year when it unveiled a 32% beer called Tactical Nuclear Penguin. However, Schorschbrau released the 40% strength Schorschbock. BrewDog said its newly released 41%, Sink the Bismarck, would cost £40 for a 330ml bottle and would only be sold online.